I don’t know anything about them, but I did find this.
http://forums.seochat.com/search-engine-promotion-29/anyone-try-trafficswarm-com-before-15767.html
http://forums.seochat.com/search-engine-promotion-29/trafficswarm-4910.html
The posts are not current, so let me know if things have changed since then.
I created an account. .02 / click is way too expensive for a traffic exchange network. I wouldn’t pay more than 0.0005 for that kind of traffic (and only if you can afford the bandwidth.) You might get the odd sale, but there are far more economical ways to do it.